US9639148B2 - Mobile information terminal - Google Patents

Abstract

A terminal apparatus includes a display module including a window glass, a touch panel, and a display panel; a display holding frame that secures the display module, the display holding frame having a screw accepting part on a rear surface which is opposite to the display panel; a cabinet case, which encloses the display holding frame, and which has a screw hole corresponding to the screw accepting part of the display holding frame; and a bolt or screw inserted into the screw accepting part of the display holding frame through the screw hole in the cabinet case.

Description

CROSS REFERENCE TO RELATED APPLICATIONS

This application is related to and claims priority under 35 U.S.C. §119(e) to Provisional Application Ser. No. 61/602,651, filed Feb. 24, 2012, the contents of which are hereby incorporated herein by reference.

BACKGROUND

1. Field

The present specification relates to a mobile information terminal having a touch panel that can detect the touch or proximity of an external conductor such as a finger of a user by detecting a change in, for example, capacitance or the like and also having a display panel that can display various types of information.

2. Description of the Related Art

FIGS. 15 and 16 schematically illustrate the partial cross sectional structure of a conventional mobile information terminal having atouch panel103 that can detect the touch or proximity of an external conductor such as a finger of a user by detecting a change in capacitance or the like and also having adisplay panel104 that can display various types of information.FIG. 15 illustrates a state in which individual components have been assembled, andFIG. 16 is an exploded view when individual components are to be assembled. The individual components inFIGS. 15 and 16 are hatched to distinguish them on the drawings and not to represent their materials.

As illustrated inFIGS. 15 and 16, the conventional mobile information terminal has a display module formed by interposing atransparent touch panel103 between a sheet oftransparent window glass102 and adisplay panel104.

When incorporated into the cabinet case of the mobile information terminal, the display module is placed so that thewindow glass102 is disposed at the outermost position and thedisplay panel104 is disposed on the inner side of the case. In the description that follows, out of the two main planes of thewindow glass102, the main plane disposed on the outer side of the cabinet case when the window display module is incorporated into the cabinet case will be appropriately referred to as the outer main plane and the main plane disposed on the inner side of the cabinet case will be appropriately referred to as the inner main plane.

The size of thewindow glass102 in its main plane direction is larger than the sizes of the main planes of thedisplay panel104 in their main plane directions. Thedisplay panel104 andwindow glass102 are placed so that the central positions of their main planes substantially match. Therefore, the outer circumferential part (referred to below as the window inner surface-side outercircumferential part102a) of the inner main plane of thewindow glass102 protrudes outward from the outer circumferential part of thedisplay panel104. The cabinet case of the mobile information terminal is formed with afront case101 and arear case120 illustrated inFIGS. 15 and 16. The display module is incorporated into thefront case101. Acircuit board106, on which electronic circuits and the like are mounted, a battery, and the like are incorporated into therear case120. Thefront case101 has an auxiliary plate to prevent the display module from warping due to, for example, an external force. The auxiliary plate is shaped like a plate made of, for example, stainless steel, and formed integrally with a resin wall, which is part of thefront case101.

When thefront case101, into which the display module has been incorporated, and therear case120, into which thecircuit board106 and the like have been incorporated, are assembled together, the mobile information terminal becomes a terminal in a substantially rectangular plate shape as illustrated in, for example,FIG. 17.

Thefront case101 has a waterproofpacking accepting part101cnear its outer circumferential walls that strike against therear case120 when thefront case101 andrear case120 are assembled together. Similarly, therear case120 has a waterproofpacking accepting part120cnear its outer circumferential walls that strike against thefront case101 when thefront case101 andrear case120 are assembled together. The waterproofpacking accepting parts101cand120cinterpose awaterproof packing121 therebetween and bring thewaterproof packing121 into tight contact with the wall surfaces of the two cases. Since the mobile information terminal is assembled with thewaterproof packing121 interposed between the waterproofpacking accepting part101cand the waterproofpacking accepting part120cin this way, it is possible to prevent water, dust, and the like from entering the interior of the mobile information terminal from a clearance formed when thefront case101 andrear case120 are assembled together.FIG. 17 schematically illustrates the external appearance of the conventional mobile information terminal in a state in which thefront case101, into which the display module has been incorporated, and therear case120, into which thecircuit board106 and the like have been incorporated, are assembled together as viewed from the front side (on the same side as the display surface of the display panel) of the mobile information terminal. That is, as illustrated inFIG. 17, the outermost circumferential part of the mobile information terminal is the front-side outercircumferential edge101bof thefront case101 and thewindow glass102 is placed inside the front-side outercircumferential edge101b. The mobile information terminal is arranged so that a display on thedisplay panel104 is visible through thetransparent window glass102 andtransparent touch panel103.

In the conventional mobile information terminal, thefront case101 has an opening on the side on which the display module is incorporated, as illustrated inFIGS. 15 and16; a step (referred to below as a windowglass mounting part101a), on which the inner surface-side outercircumferential part102aof thewindow glass102 is rested when the display module is incorporated, is formed in the opening.

As for the conventional mobile information terminal, the entire circumferences of the windowglass mounting part101aand the inner surface-side outercircumferential part102aof thewindow glass102 are bonded together, for example, by the use of a double-sidedadhesive tape107. That is, as for the conventional mobile information terminal, the display module is secured to thefront case101 by bonding the entire circumferences of the windowglass mounting part101aand the inner surface-side outercircumferential part102aof thewindow glass102 together by the use of the double-sidedadhesive tape107.

In addition, Japanese Unexamined Patent Application Publication No. 2011-238027 (PTL 1), for example, discloses a mobile programmable display unit that can suppress its display panel, circuit board, and touch panel from being damaged due to an impact caused when the mobile information terminal drops or is struck against a structure or to deformation of its cabinet. The mobile programmable display unit includes a liquid crystal panel, a touch panel, a front case, a panel shock absorbing material, a panel holder, and a holder shock absorbing material. The front case has an opening. The panel shock absorbing material is placed so as to enclose the periphery of the liquid crystal panel, the cross section of which has a shape in which the ends of the liquid crystal panel are interposed; the panel shock absorbing material is supported with its front surface and side surfaces abutting the inner surfaces of the panel holder. The panel holder, formed with a bottom frame and side walls, accommodates the liquid crystal panel and the panel shock absorbing material from the rear surface side, the circumference edge of the touch panel being secured to the front of the bottom frame. In the mobile programmable display unit, the holder shock absorbing material is interposed between the front of the bottom frame and the inner surfaces of the front case.

Japanese Unexamined Patent Application Publication No. 2010-239323 (PTL 2), for example, discloses a mobile terminal apparatus that suppresses an increase in the number of parts and can prevent parts from being damaged. The mobile terminal apparatus is formed with a liquid crystal panel, a touch panel, a liquid crystal module, a circuit board, a liquid crystal flexible cable, and two spacers. The liquid crystal panel displays various images. The touch panel, which is attached to the rear surface of the liquid crystal panel, detects a contact on the liquid crystal panel. The liquid crystal module outputs an image to be displayed on the liquid crystal panel. The circuit board includes a control circuit; the circuit board is used to have the liquid crystal module output an image and to carry out an appropriate process according to the position of the contact on the touch panel. The liquid crystal flexible cable is a flexible cable made of a flexible material; it mutually connects the control circuit on the circuit board and the liquid crystal module. One of the two spacers is formed with an insulating body; it is inserted into the clearance between the circuit board and the liquid crystal flexible cable. The other spacer is stuck to a movable cabinet at a position at which the liquid crystal flexible cable is interposed between the one spacer and the other spacer. In this mobile information terminal, the rear surface of the liquid crystal panel is stuck to the movable cabinet in the vicinity of the outer circumference of the liquid crystal panel.

CITATION LISTPatent Literature

[PTL 1] Japanese Unexamined Patent Application Publication No. 2011-238027 (FIG. 4)

[PTL 2] Japanese Unexamined Patent Application Publication No. 2010-239323 (FIG. 3)

In the conventional mobile information terminal described above, the double-sidedadhesive tape107 secures the display module, which has a certain weight, to thefront case101; even if, for example, the mobile information terminal drops on a floor or the like, the double-sidedadhesive tape107 enables the mobile information terminal to withstand the impact force due to the drop; the double-sidedadhesive tape107 also has a reasonable bonding width to prevent dust, water, and other foreign matter from entering the interior of thefront case101.

The conventional mobile information terminals must also have margins used at the time of incorporating the display module into thefront case101. To protect thewindow glass102 and the like from an impact force applied to, for example, a side wall surface of thefront case101, the wall at the front-side outercircumferential edge101bof thefront case101 must also have a certain thickness.

The conventional mobile information terminal requires that the thickness, indicated by A inFIG. 15, of the wall of the front-side outer circumference edge102bof thefront case101 be, for example, about 1.55 mm. As the margins used at the time of incorporating the display module into thefront case101, a clearance, as indicated by B inFIG. 15, between thewindow glass102 and thefront case101 needs to be, for example, about 0.075 mm wide and a clearance, as indicated by D inFIG. 15, between thedisplay panel104 andwindow glass102 needs to be, for example, about 0.42 mm wide. Since the conventional mobile information terminal uses the double-sidedadhesive tape107 having a bonding width (tape width) enough to obtain a sufficient bonding strength, the width of the windowglass mounting part101aof thefront case101 is, for example, about 1.43 mm as indicated by C inFIG. 15. In addition, as for the conventional mobile information terminal, the width from an effective display area, as indicated by E inFIG. 15, in which images and the like are actually displayed on thedisplay panel104, to the outermost circumferential part of thedisplay panel104 is, for example, about 1.4 mm.

In the case of the currently available mobile information terminal, therefore, an outer circumferential width arw, as illustrated inFIG. 17, from the outermost circumferential edge of thefront case101 to the outermost circumferential edge of the effective display area aca of thedisplay panel104 must be, for example, 4,875 mm, which is the sum of the widths indicated by A to E inFIG. 15. In the description that follows, the outer circumferential width arw from the outermost circumferential edge of thewindow glass102 to the outermost circumferential edge of the effective display area aca of thedisplay panel104 will be represented as the terminal frame width arw.

The display panels of recent mobile information terminals are becoming increasingly large and the front-side projection sizes of the mobile information terminals are becoming large accordingly. That is, the projection size of a conventional mobile information terminal has been often determined depending on the area occupied by the circuit board, the battery, and other devices, but the projection size of a recent mobile information terminal is determined by the display size of the display panel.

In the future, it is desired that mobile information terminals maintain superior portability and superior maneuverability and also have the advantage of being able to increase the amount of displayed information, which is obtained by enlarging the screen of the display panel. However, the conventional mobile information terminal described above requires the terminal frame width arw to be, for example, about a little less than 5 mm; if an attempt is made to prevent the outer size of the mobile information terminal from becoming large to maintain the portability and maneuverability, it becomes hard to increase the amount of displayed information by enlarging the screen of the display panel; conversely, if the mobile information terminal is aimed at enlarging the screen, the resulting large outer size of the mobile information terminal lowers the portability and maneuverability.

In view of these situations, the inventors recognize that a mobile information terminal having a touch panel and a display panel needs to have a large screen to increase the amount of displayed information and also maintain superior portability and maneuverability.

BRIEF SUMMARY

A terminal apparatus according to an embodiment includes a display module including a window glass, a touch panel, and a display panel; a display holding frame that secures the display module, the display holding frame having a screw accepting part on a rear surface which is opposite to the display panel; a cabinet case, which encloses the display holding frame, and which has a screw hole corresponding to the screw accepting part of the display holding frame; and a bolt or screw inserted into the screw accepting part of the display holding frame through the screw hole in the cabinet case.

More specifically, a mobile information terminal in an embodiment is structured with a display module part, a display holding frame part, and a cabinet case part. The display module part is formed by laminating a sheet of window glass, a touch panel, and a display panel. The display holding frame part holds and secures the display module part from the rear surface of the display module part, the rear surface being opposite to the display surface of the display panel. The display holding frame part has screw accepting parts on its rear surface side opposite to the display panel. The cabinet case part, which internally accumulates the display holding frame part, has screw holes corresponding to the screw accepting parts of the display holding frame part. The mobile information terminal in the embodiment is formed by screwing bolts into the screw accepting parts of the display holding frame part through the screw holes in the cabinet case part to secure the display holding frame part, to which the display module part has been secured, to the cabinet case part.

That is, according to the embodiment, since the display module part is secured to the display holding frame part and the display holding frame part is secured to the cabinet case part with bolts, the double-sided adhesive tape, which has been used to secure the display module part, becomes unnecessary.

In the mobile information terminal in the embodiment, the cabinet case part has a frame outer circumference placing part on which the outer circumference of the rear surface of the display holding frame part is placed. The mobile information terminal also has a waterproof sheet that has a shape substantially matching a prescribed shape formed by the outer circumferential part of the rear surface of the display holding frame part and the frame outer circumference placing part of the cabinet case part, the waterproof sheet having impermeability to at least moisture. The waterproof sheet is interposed between the outer circumferential part of the rear surface of the display holding frame part and the frame outer circumference placing part of the cabinet case part.

That is, according to the embodiment, since the waterproof sheet is interposed between the outer circumferential part of the rear surface of the display holding frame part and the frame outer circumference placing part of the cabinet case part, penetration of water and the like into the interior of the cabinet case part is prevented.

In the mobile information terminal in the embodiment, together with the display holding frame part, the cabinet case part internally accommodates the circuit board. The display holding frame part is made of a metal material, and has walls formed on the rear surface, the walls enclosing and covering the electronic part on the circuit board.

That is, according to the embodiment, since the electronic part on the circuit board is enclosed by the walls made of a metal material on the display holding frame part, electromagnetic noise can be shut off.

According to the embodiment of the present invention, since the display module part is secured to the display holding frame part and the display holding frame part is then secured to the cabinet case part with bolts, the double-sided adhesive tape, which has been used to secure the display module part, becomes unnecessary. Accordingly, the outer circumferential width from the outermost circumferential edge of the cabinet case part to the outermost circumferential edge of the effective display area of the display panel can be reduced as much as possible but an adequate effective display area can be obtained; in addition, the amount of displayed information can be increased by the use of a large screen, but superior portability and maneuverability can be maintained.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic cross sectional view of a mobile information terminal in an embodiment of the present invention.

FIG. 2 is an exploded view when the individual components of the mobile information terminal in the embodiment of the present invention are assembled.

FIG. 3 is a perspective view that illustrates a partial cross sectional structure when the individual components of the mobile information terminal in the embodiment of the present invention have been assembled.

FIG. 4 is a front view of the mobile information terminal, in the embodiment of the present invention, which is manufactured by incorporating a display unit into a case.

FIG. 5 is a table that indicates the values of the widths A to E, inFIG. 1, of the mobile information terminal in the embodiment of the present invention and their total and also indicates that the values of the widths A to E, inFIG. 15, of a conventional mobile information terminal and their total.

FIG. 6 is a schematic exploded perspective view of a display module and a display holding frame included in the mobile information terminal in the embodiment of the present invention.

FIG. 7 is a perspective view of a display unit in a state in which the display module has been incorporated into the display holding frame, which is part of the mobile information terminal in the embodiment of the present invention, as viewed from the frame rear surface of the display holding frame.

FIG. 8 is a perspective exploded perspective view of a case, a circuit board, and a battery pack included in the mobile information terminal in the embodiment of the present invention.

FIG. 9 is a perspective exploded perspective view of the case in which a display unit, a waterproof sheet, the circuit board, and the battery pack, which are included in the mobile information terminal in the embodiment of the present invention, have been incorporated.

FIG. 10 is a schematic cross sectional view of the mobile information terminal in the embodiment of the present invention, which implements an electromagnetic wave shield function and a heat dissipating function as other functions of the display holding frame and the like.

FIG. 11 is a perspective view of the structure in the range from the display unit to the case, as viewed from the rear surface of the case, illustrating an example of assembling the mobile information terminal, in the embodiment of the present invention, which has the electromagnetic wave shield and heat dissipating function.

FIG. 12 a perspective view as viewed from the window glass of the display unit, illustrating an example of assembling the mobile information terminal, in the embodiment of the present invention, which has the electromagnetic wave shield and heat dissipating function.

FIG. 13 is a schematic cross sectional view of the mobile information terminal, in the embodiment of the present invention, which lacks a shield auxiliary sheet and a heat dissipating sheet.

FIG. 14 is a schematic cross sectional view of a mobile information terminal as a comparative example, of the structures inFIGS. 10 and 13, in which an electronic part covering part is provided independently of the display holding frame and case.

FIG. 15 is a schematic cross sectional view of the conventional mobile information terminal.

FIG. 16 is an exploded view when the individual components of the conventional mobile information terminal are assembled.

FIG. 17 is a front view of the conventional mobile information terminal, which is manufactured by incorporating a display module into a case.

DETAILED DESCRIPTION

An advanced mobile information terminal will be described below as an embodiment of the present invention with reference to the drawings, the terminal having a touch panel that can detect the touch or proximity of an external conductor such as a finger of a user by detecting a change in, for example, capacitance or the like and also having a display panel that can display various types of information.

[Structure of the Mobile Information Terminal in this Embodiment]

FIGS. 1 to 3 schematically illustrate the partial cross sectional structure of a mobile information terminal in this embodiment that has atouch panel3 that can detect the touch or proximity of an external conductor such as a finger of a user by detecting a change in, for example, capacitance or the like and also has adisplay panel4 that can display various types of information.FIG. 1 is a cross sectional view in a state in which individual components have been assembled,FIG. 2 is an exploded view when the individual components are assembled, andFIG. 3 is a perspective view including a partial cross sectional structure when the individual components have been assembled. The individual components inFIGS. 1 to 3 are hatched to distinguish them on the drawings and not to represent their materials. This is also true for the subsequent cross sectional views.

As illustrated inFIGS. 1 to 3, the mobile information terminal in this embodiment has adisplay module10 formed by interposing atransparent touch panel3 in a rectangular plate shape between a sheet oftransparent window glass2 in a rectangular plate shape and adisplay panel4 in a rectangular plate shape.

When incorporated into the cabinet case (referred to below simply as the case1) of the mobile information terminal in this embodiment, thedisplay module10 is placed so that thewindow glass2 is disposed at the outermost position and thedisplay panel4 is disposed on the inner side of thecase1. In the description that follows, out of the two main planes of thewindow glass2, the main plane disposed on the outer side when thedisplay module10 is incorporated into thecase1 will be appropriately referred to as the window outside main plane and the main plane disposed on the inner side of thecase1 will be appropriately referred to as the window inside main plane. In the description that follows, out of the two main planes of thedisplay panel4, the main plane disposed on the inner side of thecase1 when thedisplay module10 is incorporated into thecase1 will be appropriately referred to as the panel insidemain plane4a.

The size of thewindow glass2 in its main plane direction is larger than the sizes of the main planes of thedisplay panel4 in their main plane directions. Thedisplay panel4 andwindow glass2 are placed so that the central positions of their main planes substantially match. Therefore, the outer circumferential part (referred to below as the window inner surface-side outercircumferential part2a) of the window inside main plane of thewindow glass2 protrudes outward from the outer circumferential part of thedisplay panel4.

The mobile information terminal in this embodiment also has a frame (referred to below as a display holding frame5) configured to hold thedisplay module10 from the same side as the panel insidemain plane4aof thedisplay panel4. In this embodiment, thedisplay holding frame5 is formed by performing so-called die-casting molding using, for example, magnesium, aluminum, or another metal.

Thedisplay holding frame5 is shaped so as to be slightly larger the planar shapes of thedisplay panel4 andtouch panel3 and have a depression (referred to below as a displaypanel accepting part5b), the depth of which is extremely slightly smaller than the total height of thedisplay panel4 andtouch panel3 in their lamination direction. That is, in other words, the displaypanel accepting part5bencloses the outer circumferential parts of thedisplay panel4 andtouch panel3 when thedisplay module10 is fitted from the panel insideplane4aof thedisplay panel4; the displaypanel accepting part5bhas walls (referred to below asframe side walls5c), the height of which is extremely slightly lower than the total height of thedisplay panel4 andtouch panel3 in their lamination direction, and also has a bottom surface (referred to below as a framebottom surface5f) facing the panel insideplane4aof thedisplay panel4.

When, in this embodiment, thedisplay panel4 of thedisplay module10 is fitted into the displaypanel accepting part5b, the panel insidemain plane4aof thedisplay panel4 is bonded to the framebottom surface5fof the displaypanel accepting part5bwith, for example, an adhesive or a double-sided adhesive sheet. Thus, thedisplay module10 is secured to thedisplay holding frame5. In this embodiment, the structure in which thedisplay module10 is secured to thedisplay holding frame5 is handled as a single unit. In the description that follows, the unit will be appropriately referred to as thedisplay unit11.

Thedisplay holding frame5 has screw accepting parts (referred to below as internally threadedparts5a) on a rear surface (referred to below as a framerear surface5e) opposite to the framebottom surface5fof the displaypanel accepting part5b, the internally threadedparts5aenabling thedisplay holding frame5 to be secured (screwed) to thecase1 with, for example,bolts8.

Thecase1 in this embodiment has through-holes1ain its inner bottom surface (referred to below as a casebottom surface1g), the inner diameter of the through-hole1abeing larger than the maximum outer diameter of the threaded part (referred to below as the externally threaded part) of thebolt8 and being smaller than the diameter of the bolt head, and also has a countersunkpart1b, the depth of which is slightly larger than the height of the bolt head.

In the mobile information terminal in this embodiment, the externally threaded part of thebolt8 is inserted from thecountersunk part1bof thecase1 and is then screwed into the internally threadedpart5aof thedisplay holding frame5 through the through-hole1a. Thus, thedisplay holding frame5 is secured to thecase1 with thebolts8. That is, thedisplay unit11 is placed in a state in which it is secured to thecase1 in this embodiment with thebolts8. As for the mobile information terminal in this embodiment, it is also possible to remove thedisplay unit11 easily from thecase1 by removing thebolts8. In other words, the mobile information terminal in this embodiment is structured so that thedisplay unit11 can be easily replaced.

Although this embodiment uses an example in which thedisplay unit11 is secured to thecase1, which is an external cabinet of the mobile information terminal, the mobile information terminal may be structured so that thedisplay unit11 is secured to an internal chassis or the like with thebolts8, the internal chassis being formed integrally with or screwed to thecase1, for example.

Thecase1 in this embodiment has a step at a position that faces an outer circumferential part (referred to below as a frame rear surface-side outercircumferential part5d) on the framerear surface5eof thedisplay holding frame5 when thedisplay unit11 is secured. The step is a part (referred to bellow as a frame outercircumference placing part1c) on which the frame rear surface-side outercircumferential part5dof thedisplay holding frame5 is placed. That is, in other words, the frame outercircumference placing part1cis a step that has a rectangular ring shape facing the frame rear surface-side outercircumferential part5dof thedisplay holding frame5.

The mobile information terminal in this embodiment further has awaterproof sheet7 at a place where thewaterproof sheet7 is interposed between the frame rear surface-side outercircumferential part5dof thedisplay holding frame5 and the frame outercircumference placing part1cof thecase1 when thedisplay unit11 is secured to thecase1. Thewaterproof sheet7 has as rectangular ring shape corresponding to the frame rear surface-side outercircumferential part5dof thedisplay holding frame5 and the frame outercircumference placing part1cof thecase1; thewaterproof sheet7 is formed with, for example, a silicone rubber sheet or another material that does not allow moisture to penetrate. That is, as for the mobile information terminal in this embodiment, thewaterproof sheet7 is interposed between the frame rear surface-side outercircumferential part5dof thedisplay holding frame5 and the frame outercircumference placing part1cof thecase1 when thedisplay unit11 is secured to thecase1; when thewaterproof sheet7 is brought into tight contact with the entire circumferences of the frame rear surface-side outercircumferential part5dand frame outercircumference placing part1c, it becomes possible to prevent water and dust from entering the interior of thecase1. Thewaterproof sheet7 may have viscosity and adhesiveness as well as a waterproof property.

In the mobile information terminal in this embodiment, the frame outercircumference placing part1cof thecase1 has walls (referred to below as case front-side outer circumferential walls id), which enclose the outer circumference of thedisplay unit11 when thedisplay unit11 is incorporated, the height of the case front-side outercircumferential wall1dbeing substantially the same as the height from the framerear surface5eof thedisplay holding frame5 to the window outside main plane of thewindow glass2. Accordingly, as for the mobile information terminal in this embodiment, the height at the top of the case front-side outer circumferential walls id substantially matches the height of the window outside main plane of thewindow glass2 of thedisplay unit11 when thedisplay unit11 is secured to thecase1. In addition, in this embodiment, due to the existence of the case front-side outer circumferential walls id, thewindow glass2 is protected from, for example, an impact from a side surface direction.

The mobile information terminal in this embodiment is manufactured by incorporating thedisplay unit11, thecircuit board6 on which various types of electronic parts are mounted, and a battery pack into thecase1. When thedisplay unit11 and the like are incorporated into thecase1, the mobile information terminal in this embodiment becomes a terminal having a substantially rectangular plate shape as illustrated, for example, inFIG. 4.

As for the mobile information terminal in this embodiment, thedisplay unit11 is formed by, for example, boding the panel insidemain plane4aof thedisplay panel4 and the displaypanel accepting part5bof thedisplay holding frame5 together as described above and thedisplay unit11 is secured to thecase1 with thebolts8, so thedisplay module10 having a certain weight can be firmly secured to thecase1.

Since the mobile information terminal in this embodiment is firmly secured to thecase1 in a state in which thedisplay module10 is enclosed by thedisplay holding frame5, even if the terminal drops, for example, on a floor, the terminal can withstand an impact force generated by the drop or the like and can protect thedisplay module10.

Furthermore, as for the mobile information terminal in this embodiment, since thewaterproof sheet7 is disposed between the frame rear surface-side outercircumferential part5dof thedisplay holding frame5 and the frame outercircumference placing part1cof thecase1, it is possible to prevent water, dust, and the like from entering the interior of thecase1.

As for the mobile information terminal in this embodiment, since a structure is employed in which thedisplay unit11 that uses the ruggeddisplay holding frame5 as described above to enclose thedisplay module10 is firmly secured to thecase1 with thebolts8, a wide double-sided adhesive tape does not need to be used as in the conventional mobile information terminal. Similarly, since the mobile information terminal in this embodiment uses the firmly securing method described above and thecase1 has the case front-side outer circumferential walls id, it is possible to protect thewindow glass2 and the like, for example, from an external impact applied toward a side surface of thecase1. As a result, the side walls of thecase1 can be made thinner as compared with the conventional mobile information terminal.

Since the mobile information terminal in this embodiment has the structure as described above, as an example, the thickness, indicated by A inFIG. 1, of the case front-side outercircumferential wall1dmay be, for example, about 1.05 mm. The width of the clearance required as a margin when thedisplay unit11 is incorporated into thecase1 is the width of the clearance from the end of the side surface of thewindow glass2 to the inner wall surface of the case front-side outercircumferential wall1d, as indicated by B inFIG. 1, the value of the width being, for example, about 0.1 mm. The width of the clearance required as a margin when thedisplay module10 is incorporated into thedisplay holding frame5 is the width of the clearance from the end of the side surface of thedisplay panel4 to the inner wall surface of theframe side wall5cof thedisplay holding frame5, as indicated by D inFIG. 1, the value of the width being, for example, about 0.2 mm. As for the mobile information terminal in this embodiment, the thickness of the inner wall surface of theframe side wall5cof thedisplay holding frame5, as indicated by C inFIG. 1, is, for example, about 0.6 mm. Furthermore, as for the mobile information terminal in this embodiment, the width from the effective display area in which images and the like are actually displayed on thedisplay panel4 to the outermost circumferential part of thedisplay panel4, as indicated by E inFIG. 1, is, for example, about 1.2 mm.

As for the mobile information terminal in this embodiment, therefore, an outer circumferential width ARW, as illustrated inFIG. 4, from the outermost circumferential edge of thecase1 to the outermost circumferential edge of the effective display area ACA of thedisplay panel4 is, for example about 3.15 mm, which is the sum of the widths indicated by A to E inFIG. 1. In the description that follows, the outer circumferential width ARW from the outermost circumferential edge of thewindow glass2 to the outermost circumferential edge of the effective display area ACA of thedisplay panel4 will be represented as the terminal frame width ARW.

FIG. 5 is a table that indicates the values of the widths A to E, inFIG. 1, of the mobile information terminal in this embodiment and their total and also indicates that the values of the widths A to E, inFIG. 15, of the conventional mobile information terminal described above and their total.

As seen from the values in the table inFIG. 5, the terminal frame width ARW of the mobile information terminal in this embodiment is about 3.15 mm; by comparison, the terminal frame width arw of the conventional mobile information terminal described above is about 4.875 mm. That is, the mobile information terminal in this embodiment can have a smaller terminal frame width ARW than the conventional mobile information terminal. Therefore, the mobile information terminal in this embodiment can increase the amount of displayed information by the use of a large screen, and can also maintain superior portability and maneuverability because the front-side projection size of the mobile information terminal is not enlarged.

[Example of Assembling the Mobile Information Terminal in this Embodiment]

FIGS. 6 to 9 illustrate an example of assembling the mobile information terminal in this embodiment described above.

Thedisplay unit11 of the mobile information terminal in this embodiment is formed by incorporating thedisplay module10, which is formed by bonding thewindow glass2,touch panel3, anddisplay panel4 described above together, into thedisplay holding frame5, as illustrated inFIG. 6.FIG. 7 is a perspective view of thedisplay unit11 in a state in which thedisplay module10 has been incorporated into thedisplay holding frame5, as viewed from the framerear surface5eof thedisplay holding frame5.

As indicated by the example inFIGS. 6 and 7, thedisplay holding frame5 has internally threadedparts5aat a total of six places, which are four places near the four corners of the framerear surface5eand two places substantially at the center near the two longer edges of thedisplay holding frame5, for example.

Thedisplay holding frame5 in this embodiment also hasopenings5gand5h, near its shorter edges, in which the framebottom surface5fis not formed. Theopenings5gand5heach are a space in which, for example, an antenna or the like connected to thecircuit board6 is disposed. That is, in this embodiment, an antenna is disposed in theopening5gor5hso that thedisplay holding frame5, which is made of a metal, less affects the antenna characteristics.

Thecase1 of the mobile information terminal in this embodiment accommodates thecircuit board6,battery pack9, and the like as illustrated inFIG. 8.

As illustrated inFIG. 9, the mobile information terminal in this embodiment is formed by incorporating thedisplay unit11 into thecase1, in which thecircuit board6,battery pack9, and the like have been incorporated, with thebolts8 as described above. At that time, thewaterproof sheet7 is inserted between thecase1 and thedisplay unit11, and thewaterproof sheet7 is interposed between the frame rear surface-side outercircumferential part5dof thedisplay holding frame5 and the frame outer circumference placing part is of thecase1, as described above.

[Other Functions of the Display Holding Frame and the Like]

In addition to the function, as described above, of holding thedisplay module10, thedisplay holding frame5 has, for example, an electromagnetic wave shield function for electronic parts mounted on thecircuit board6 and a heat dissipating function (heat diffusing function) for the electronic parts.

That is, thedisplay holding frame5 has a frame part (referred to below as a frame-side electronic partcovering frame part5k) that encloses and covers anelectronic part6aon thecircuit board6, as illustrated inFIG. 10, as a structure that implements the electromagnetic wave shield function and heat dissipating function (heat diffusing function). The frame-side electronic partcovering frame part5kis disposed at a position on the framerear surface5eof thedisplay holding frame5 at which the frame-side electronic partcovering frame part5kencloses and covers theelectronic part6aon thecircuit board6 when thedisplay unit11 is incorporated into thecase1 together with thecircuit board6. The frame-side electronic partcovering frame part5khas walls, the height of which is slightly larger than the maximum height from the board surface of theelectronic part6aon thecircuit board6; the walls are formed so as to enclose theelectronic part6awithout a clearance. Although the walls have a rectangular shape, this is of course an example: if the walls are shaped so that they can enclose theelectronic part6awithout a clearance, they may have a polygonal, circular, or elliptical shape other than the rectangular shape or may have another shape according to the placement of theelectronic part6a.

Thus, since, as for the mobile information terminal in this embodiment, theelectronic part6aon thecircuit board6 is enclosed and covered with the frame-side electronic partcovering frame part5kformed on thedisplay holding frame5, which is made of a metal or the like, without a clearance, it is possible to shut off electromagnetic noise emitted from theelectronic part6a, which would otherwise be released to the outside, and to shut off external electromagnetic noise and prevent theelectronic part6afrom being adversely affected.

In this embodiment, a structure similar to the frame-side electronic partcovering frame part5kdisposed on thedisplay holding frame5 can also be provided, for example, on same side as thecase1. That is, if thecircuit board6 is a double-sided board, for example, thecase1 has a frame part (referred to below as a case-side electronic partcovering frame part1k) that encloses and covers anelectronic part6bmounted on the same side as thecase1. The case-side electronic partcovering frame part1kis disposed at a position on the casebottom surface1gof thecase1 at which the case-side electronic partcovering frame part1kencloses and covers theelectronic part6bon the case side on thecircuit board6 when thecircuit board6 is incorporated into thecase1. The case-side electronic partcovering frame part1khas walls, the height of which is slightly larger than the maximum height from the board surface of theelectronic part6bmounted on thecircuit board6; the walls are formed so as to enclose theelectronic part6bwithout a clearance. Although the walls have a rectangular shape, this is only an example as in the case of the frame-side electronic partcovering frame part5k: if the walls are shaped so that they can enclose theelectronic part6bwithout a clearance, they may have a polygonal, circular, or elliptical shape other than the rectangular shape or may have another shape according to the placement of theelectronic part6b.

Thus, since, as for the mobile information terminal in this embodiment, when thecircuit board6 is a double-sided board, the case-side electronic partcovering frame part1ksimilar to the frame-side electronic partcovering frame part5kis also provided on the same side as thecase1 made of, for example, a metal and the case-side electronic partcovering frame part1kencloses and covers theelectronic part6bon thecircuit board6 without clearance, it is possible to shut off electromagnetic noise as described above.

Furthermore, as for the mobile information terminal in this embodiment, it is also possible to place a shieldauxiliary sheet14 between the wall end of the frame-side electronic partcovering frame part5kand the board surface of thecircuit board6 and similarly place a shieldauxiliary sheet15 between the wall end of the case-side electronic partcovering frame part1kand the board surface of thecircuit board6.

The shieldauxiliary sheet14 is formed with a material that can shut off electromagnetic waves; the shieldauxiliary sheet14 has substantially the same shape as, for example, a ring shape formed by the wall end of the frame-side electronic partcovering frame part5kand has a slightly larger thickness than the width of a clearance between the frame-side electronic partcovering frame part5kand the board surface of thecircuit board6. Similarly, the shieldauxiliary sheet15 is formed with a material that can shut off electromagnetic waves; the shieldauxiliary sheet15 has substantially the same shape as a ring shape formed by the wall end of the case-side electronic partcovering frame part1kand has a larger thickness than the width of a clearance between the case-side electronic partcovering frame part1kand the board surface of thecircuit board6.

That is, the shieldauxiliary sheet14 is provided to shut off electromagnetic waves that pass through the clearance between the frame-side electronic partcovering frame part5kand thecircuit board6, and the shieldauxiliary sheet15 is similarly provided to shut off electromagnetic waves that pass through the clearance between the case-side electronic partcovering frame part1kand thecircuit board6. Thus, the mobile information terminal in this embodiment completely prevents leakage of electromagnetic waves by the use of the shieldauxiliary sheets14 and15.

As for the mobile information terminal in this embodiment, it is also possible to place a heat dissipating sheet (heat diffusing sheet)16 between the framerear surface5eof thedisplay holding frame5 and theelectronic part6aof thecircuit board6.

Theheat dissipating sheet16, having a high heat diffusing property and heat dissipating property and also having non-conductivity, is placed in contact with theelectronic part6amounted on thecircuit board6 and with the framerear surface5eof thedisplay holding frame5. Accordingly, heat generated from theelectronic part6ais transmitted through theheat dissipating sheet16 to thedisplay holding frame5, after which the heat is further transmitted from thedisplay holding frame5 to thecase1 and exhausted to the outside. It is desirable to place another heat dissipating sheet between the casebottom surface1gof thecase1 and theelectronic part6bon thecircuit board6 as well.

[Example of Assembling the Mobile Information Terminal having the Electromagnetic Wave Shield Function and Heat Dissipating Function]

FIGS. 11 and 12 illustrate an example of assembling the mobile information terminal having the electromagnetic wave shield function and heat dissipating function described above.FIG. 11 is a perspective view of the structure in the range from thedisplay unit11 to thecase1, as viewed from the rear surface of thecase1.FIG. 12 a perspective view as viewed from thewindow glass2 of thedisplay unit11. InFIGS. 11 and 12, the assembling of thedisplay unit11,case1,circuit board6, andbattery pack9 is the same as inFIGS. 6 to 8, so its description will be omitted.

As illustrated inFIGS. 11 and 12, as for the mobile information terminal in this embodiment, the frame-side electronic partcovering frame part5kis assembled at a position at which the frame-side electronic partcovering frame part5kencloses and covers theelectronic part6aon thecircuit board6, and the shieldauxiliary sheet14 is placed between the wall end of the frame-side electronic partcovering frame part5kand the board surface of thecircuit board6. In addition, as for the mobile information terminal in this embodiment, the case-side electronic partcovering frame part1kis assembled so as to enclose and cover theelectronic part6bon thecircuit board6, and theheat dissipating sheet15 is placed between the wall end of the case-side electronic partcovering frame part1kand the board surface of thecircuit board6. Furthermore, as for the mobile information terminal in this embodiment, aheat dissipating sheet16 is placed and assembled between the framerear surface5eof thedisplay holding frame5 and theelectronic part6aof thecircuit board6.

Although, in the example of the structure inFIG. 10, the shieldauxiliary sheets14 and15 and theheat dissipating sheet16 have been provided, if, for example, there is almost no clearance between the wall end of the frame-side electronic partcovering frame part5kand the board surface of thecircuit board6 and between the wall end of the case-side electronic partcovering frame part1kand the board surface of thecircuit board6 and similarly there is almost no clearance between the framerear surface5eof thedisplay holding frame5 and theelectronic part6aon thecircuit board6, a structure, as illustrated inFIG. 13, that lacks the shieldauxiliary sheets14 and15 and theheat dissipating sheet16 may be used. That is, the structure inFIG. 13 illustrates an example in which the shieldauxiliary sheets14 and15 and theheat dissipating sheet16 are eliminated to further thin the mobile information terminal.

FIG. 14 is a schematic cross sectional view of a mobile information terminal as a comparative example, of the structures inFIGS. 10 and 13, in which theelectronic parts6aand6bare respectively covered by electronicpart covering parts31 and32 provided independently of thedisplay holding frame5 andcase1. In the example of the structure illustrated inFIG. 14, the electronicpart covering parts31 and32 must be separately prepared as dedicated shielding parts and additional man-hours taken to incorporate the separately prepared electronicpart covering parts31 and32 are required, so the cost of the mobile information terminal may be increased and the thickness of the mobile information terminal may be increased by an amount equal to the heights of the separately structured electronicpart covering parts31 and32. By comparison, in the structures inFIGS. 10 and 13, dedicated separate parts as in the example inFIG. 14 are not necessary, so cost reduction can be achieved by eliminating the costs of the parts and the man-hours, and the thickness of the mobile information terminal can also be reduced.

[Effects by the Use of the Structure of the Mobile Information Terminal in this Embodiment]

As described above, as for the mobile information terminal in this embodiment, thedisplay unit11 is formed in such a way that thedisplay module10 formed by integrating the components from thewindow glass2 to thedisplay panel4 is further held and secured by thedisplay holding frame5. Thedisplay holding frame5 of thedisplay unit11 can be screwed to thecase1 with thebolts8. Since, as for the mobile information terminal in this embodiment, thedisplay unit11 is secured to thecase1 through a mechanical structure in which thebolts8 and like are used, thedisplay unit11 can be firmly secured to thecase1 as compared with a structure as used in, for example, the conventional mobile information terminal, in which the window glass and the display panel are held with only a double-sided adhesive tape.

Accordingly, the mobile information terminal in this embodiment does not need the double-sided adhesive tape used in the conventional mobile information terminal, and thereby does not need the size in the tape width direction of the double-sided adhesive tape, so the terminal frame width ARW can be extremely reduced (the frame can be narrowed). That is, as for the mobile information terminal in this embodiment, it is possible to increase the ratio of the effective display area ACA of the display panel to the front-side projection size of the mobile information terminal; in other words, the display screen size can be more increased, enabling the amount of displayed information to be increased. Yet, as for the mobile information terminal in this embodiment, it is possible to suppress the front-side projection size of the terminal from being enlarged, so superior portability and maneuverability can be maintained.

In this embodiment, since thebolts8 are used to secure thedisplay unit11 to thecase1, thedisplay unit11 can be easily detached from thecase1 by removing thebolts8 and can also be easily attached again; the attachment and detachment can be repeated any number of times.

Accordingly, parts in the mobile information terminal in this embodiment can be easily repaired, for example, and the mobile information terminal can be easily discarded, enabling the cost to be reduced.

Furthermore, in the mobile information terminal in this embodiment, thedisplay holding frame5 is a part placed in thecase1 and is not exposed to the outside; only thecase1 and the like are exposed to the outside and thereby design providing a sense of unity can be achieved.

Since the mobile information terminal in this embodiment has thewaterproof sheet7, it can assure waterproof property.

As a frame structure that encloses theelectronic part6a, the mobile information terminal in this embodiment has the frame-side electronic partcovering frame part5kon the same side of thedisplay holding frame5 as thecircuit board6 made of a metal. As a frame structure that encloses theelectronic part6b, the mobile information terminal in this embodiment similarly has the case-side electronic partcovering frame part1kon the same side of thecase1 as thecircuit board6 made of a metal. The mobile information terminal in this embodiment has the shieldauxiliary sheet14 or the like between, for example, thecircuit board6 and the wall end of the frame-side electronic partcovering frame part5kon the same side as thecircuit board6 and also has the shieldauxiliary sheet15 or the like between, for example, thecircuit board6 and the wall end of the case-side electronic partcovering frame part1kon the same side as thecircuit board6.

Accordingly, the mobile information terminal in this embodiment can shut off an electromagnetic wave noise. That is, the mobile information terminal in this embodiment does not require dedicated shield parts as, for example, separate parts, so its thickness can be reduced accordingly, so it becomes possible to mount an electronic part having a higher placement height from thecircuit board6 or to thin the terminal body, for example. Since in this embodiment, dedicated shield parts, which are separate parts, become unnecessary, the number of parts can be reduced.

In addition, since in the mobile information terminal in this embodiment, theheat dissipating sheet16 is placed between theelectronic part6aon thecircuit board6 and thedisplay holding frame5, it is possible to efficiently diffuse heat generated by theelectronic part6aon thecircuit board6 through theheat dissipating sheet16 to thedisplay holding frame5. Of course, a similar heat dissipating sheet can also be placed between thecase1 and theelectronic part6bon thecircuit board6.

[Generalization]

As described above, the mobile information terminal in an embodiment of the present invention is structured with adisplay module10, adisplay holding frame5, acase1, andbolts8. Thedisplay module10 is formed by laminating a sheet ofwindow glass2, atouch panel3, and adisplay holding frame5. Thedisplay holding frame5 holds and secures thedisplay module10 from the rear surface of thedisplay module10, the rear surface being opposite to the display surface of adisplay panel4. Thedisplay holding frame5 has screw accepting parts (internally threadedparts5a) on its rear surface side opposite to thedisplay panel4. Thecase1, which internally accumulates thedisplay holding frame5, has screw holes (through-holes1aandcountersunk parts1b) corresponding to the screw accepting parts of thedisplay holding frame5. Eachbolt8 is screwed into the screw accepting part of thedisplay holding frame5, to which thedisplay module10 has been secured, through a screw hole in thecase1 to secure thedisplay holding frame5, to which thedisplay module10 has been secured, to thecase1.

In the mobile information terminal in the embodiment of the present invention, thecase1 has a frame outercircumference placing part1con which the outer circumference of the rear surface of thedisplay holding frame5 is placed, and thewaterproof sheet7 is interposed between the outer circumferential part of the rear surface of thedisplay holding frame5 and the frame outercircumference placing part1cof thecase1. Thewaterproof sheet7 has a shape substantially matching a prescribed shape formed by the outer circumferential part of the rear surface of thedisplay holding frame5 and the frame outercircumference placing part1cof thecase1, thewaterproof sheet7 having impermeability to at least moisture.

In the mobile information terminal in the embodiment of the present invention, together with the display holdingframe part5, thecase1 internally accommodates thecircuit board6. Thedisplay holding frame5 is made of a metal material and has walls (frame-side electronic partcovering frame part5k) on the rear surface, the walls enclosing and covering theelectronic part6aon thecircuit board6.

The mobile information terminal in the embodiment of the present invention also has a conductive sheet (shield auxiliary sheet14) between the board surface of thecircuit board6 and the wall end of the walls (frame-side electronic partcovering frame part5k) of thedisplay holding frame5.

The mobile information terminal in the embodiment of the present invention also has a heat diffusing sheet (heat dissipating sheet16) between theelectronic part6aon thecircuit board6 and the rear surface enclosed by the walls (frame-side electronic partcovering frame part5k) of thedisplay holding frame5.

In the mobile information terminal in the embodiment of the present invention, thecase1 is made of a metal material; together with thedisplay holding frame5, thecase1 internally accommodates thecircuit board6; thecase1 has walls (case-side electronic partcovering frame part1k) on a side on which thecircuit board6 is placed, the walls enclosing and covering theelectronic part6bon thecircuit board6.

Furthermore, the mobile information terminal in the embodiment of the present invention has a conductive sheet (shield auxiliary sheet15) between the board surface of thecircuit board6 and the end of the walls (case-side electronic partcovering frame part1k) of thecase1.

The mobile information terminal having the structure described above in the embodiment of the present invention can increase the amount of displayed information by the use of a large screen, and can also maintain superior portability and maneuverability. In addition, the mobile information terminal in the embodiment of the present invention can shut down electromagnetic noise and can diffuse and exhaust heat generated by the electronic part.

The mobile information terminal in this embodiment can be applied not only to, for example, advanced mobile telephone terminals and tablet terminals or slate PCs but also to, for example, so-called personal digital assistants (PDAs), mobile game machines, mobile navigation terminals, and other various mobile information terminals.

The above description of the embodiment is just an example of the present invention. Accordingly, it will be appreciated that the present invention is not limited to the embodiment described above and variations and modifications are possible according to, for example, design without departing from the technical concept of the present invention.

It will be also understood by those skilled in the art that various modification and combinations and other embodiments may be derived from design or other elements within the range of the claims of the present invention or an equivalent range of the claims.

REFERENCE SIGNS LIST

• • 1: case
  • 1a: through-hole
  • 1b: countersunk part
  • 1c: frame outer circumference placing part
  • 1d: case front-side outer circumferential wall
  • 1g: case bottom surface
  • 1k: case-side electronic part covering frame part
  • 2: window glass
  • 2a: window inner surface-side outer circumferential part
  • 3: touch panel
  • 4: display panel
  • 4a: panel inside main plane
  • 5: display holding frame
  • 5a: internally threaded part
  • 5b: display panel accepting part
  • 5c: frame side wall
  • 5d: frame rear surface-side outer circumferential part
  • 5e: frame rear surface
  • 5f: frame bottom surface
  • 5k: frame-side electronic part covering frame part
  • 6: circuit board
  • 6a: display-side electronic part
  • 6b: case-side electronic part
  • 7: waterproof sheet
  • 8: bolt
  • 9: battery pack
  • 10: display module
  • 11: display unit
  • 14,15: shield auxiliary sheet
  • 16: heat dissipating sheet

Claims (10)

What is claimed is:

1. A terminal apparatus comprising:

a display module including a window glass, a touch panel, and a display panel, the window glass having a larger surface area than each of the touch panel and display panel;

a display holding frame that secures the display module, the display holding frame having a screw accepting part on a rear surface which is opposite to the display panel;

a cabinet case, which encloses the rear surface and an outer side surface of the display holding frame, and which has a screw hole corresponding to the screw accepting part of the display holding frame; and

a bolt or screw inserted into the screw accepting part of the display holding frame through the screw hole in the cabinet case,

wherein:

the cabinet case has a frame outer circumference placing part on which an outer circumferential part of the rear surface of the display holding frame is placed,

the terminal apparatus further comprises a waterproof sheet, having impermeability at least to moisture, is provided between the outer circumferential part of the rear surface of the display holding frame and the frame outer circumference placing part of the cabinet case, and

the screw accepting part is disposed between the waterproof sheet and a circuit board of the terminal apparatus,

wherein an interior surface of the window glass, which protrudes outward beyond an outer edge of each of the touch panel and display panel, is directly bonded to and overlaps the display holding frame on a front surface of a protruding portion of the display holding frame that is opposite to the outer circumferential part of the rear surface of the display holding frame, and an exterior surface of the window glass is substantially flush with a top edge of the cabinet case, and

wherein a width of a top surface of the terminal apparatus between an outer edge of the cabinet case and a start of an effective display area of the display module is a maximum of 3.15 mm.

2. The terminal apparatus according toclaim 1, wherein the waterproof sheet is made of a silicon rubber sheet.

3. The terminal apparatus according toclaim 1, wherein the waterproof sheet has a shape substantially matching a shape formed by the outer circumferential part of the rear surface of the display holding frame and the frame outer circumference placing part of the cabinet case.

4. The terminal apparatus according toclaim 1, wherein the display holding frame and the cabinet case are configured to internally accommodate the circuit board, and

the display holding frame is made of a metal material and has a wall formed on the rear surface, the wall enclosing and covering an electronic part on the circuit board.

5. The terminal apparatus according toclaim 4, further comprising a conductive sheet placed between a board surface of the circuit board and an end of the wall of the display holding frame.

6. The terminal apparatus according toclaim 5, wherein the conductive sheet is formed of a material that shuts off electromagnetic waves.

7. The terminal apparatus according toclaim 4, further comprising a heat diffusing sheet placed between the electronic part on the circuit board and the rear surface enclosed by the wall of the display holding frame.

8. The terminal apparatus according toclaim 7, wherein the heat diffusing sheet has a high heat diffusing property, a heat dissipating property, and is non-conductive.

9. The terminal apparatus according toclaim 1, wherein the display holding frame and the cabinet case are configured to internally accommodate the circuit board, and

the cabinet case is made of a metal material and has a wall formed on a side on which the circuit board is placed, the wall enclosing and covering the electronic part on the circuit board.

10. The terminal apparatus according toclaim 9, further comprising a conductive sheet placed between a board surface of the circuit board and an end of the wall of the cabinet case.

Images